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[英]ImportError: No module named _ssl occurring even when /usr/lib64/python2.7/lib-dynload/_ssl.so is available fc18
[英]python + script failed regarding to cryptography under /usr/lib64/python2.7
我創建以下 python 腳本
這個 python 腳本將讀取文件/lpp/airflow/.sec/rmq_pass
到 var - pass_hash
並將其解密為decrypted_pass
more security_test.py
import sys
import os
import base64
from cryptography.fernet import Fernet
key_file = "/lpp/airflow/.sec/key"
rmq_pass_file = "/lpp/airflow/.sec/rmq_pass"
key = open(key_file, 'r')
f = Fernet(key.read())
pass_hash = open(rmq_pass_file, 'r')
#decrypting the password from "pass_file" file using the key from the "key_file".
decrypted_pass = f.decrypt(pass_hash.read())
ConnStr = "amqp://airflow:" + decrypted_pass + "@localhost:5672//"
當我運行腳本時,它在 /usr/lib64/python2.7/site-packages/cryptography/fernet.py 或/usr/lib64/python2.7/site-packages/cryptography
下的任何地方都失敗了
我們嘗試重新安裝 package 加密,但這沒有幫助
和想法可能是什么?
python security_test.py
Traceback (most recent call last):
File "security_test.py", line 14, in <module>
decrypted_pass = f.decrypt(pass_hash.read())
File "/usr/lib64/python2.7/site-packages/cryptography/fernet.py", line 75, in decrypt
return self._decrypt_data(data, timestamp, ttl)
File "/usr/lib64/python2.7/site-packages/cryptography/fernet.py", line 117, in _decrypt_data
self._verify_signature(data)
File "/usr/lib64/python2.7/site-packages/cryptography/fernet.py", line 101, in _verify_signature
h = HMAC(self._signing_key, hashes.SHA256(), backend=self._backend)
File "/usr/lib64/python2.7/site-packages/cryptography/hazmat/primitives/hmac.py", line 31, in __init__
self._ctx = self._backend.create_hmac_ctx(key, self.algorithm)
File "/usr/lib64/python2.7/site-packages/cryptography/hazmat/backends/openssl/backend.py", line 207, in create_hmac_ctx
return _HMACContext(self, key, algorithm)
File "/usr/lib64/python2.7/site-packages/cryptography/hazmat/backends/openssl/hmac.py", line 34, in __init__
key_ptr = self._backend._ffi.from_buffer(key)
TypeError: from_buffer() cannot return the address of the raw string within a str or unicode or bytearray object
重要提示 - 在其他機器上這個腳本工作正常
解決它的最佳方法是什么? 通過刪除所有模塊並重新安裝它們? 或通過重新安裝 python?
如果這是由pip
安裝的,則此問題是由於cffi
package 過時(我能夠通過在virtualenv
中強制安裝cffi
1.5 來重現此問題)。 較新版本的cryptography
需要cffi >= 1.8
,但pip
並不總是能正確解決這個問題(取決於各種其他場景)。 您可以pip install -U cffi
看看是否可以解決它,但通常您應該強烈考慮在virtualenv
內運行 Python 代碼,而不是將包安裝到全局 ZEFE90A8E604A7C840E88D03AZ87 空間中。 操作系統 package 管理器假定它擁有全局包,如果您將分發包與pip
安裝混合和匹配,您可能會導致安裝出現許多問題。
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